Daikin Industries, Ltd.

Panasonic Corporation

Satoshi Tsukamoto

Hiroki Shirasaka

Katsuaki Abe

Noriaki Saito

Yasuyuki Naito

Kentaro Miyano

Tadashi Morita

Yoshifumi Hosokawa

Yoshito Shimizu

Yoshitomo Tsuka

Ryouta Nakai

Yoshihiro Kataoka

Yasukazu Nabetani

Hidemi Tanji

Yoshinori Kagawa

Yasuhiko Ohsawa

Seiichi Murakami

A stator includes a stator core having a plurality of teeth, an insulator, a plurality of coils, a first region in which distal ends of feeder lines are connected to each other, and a second region in which distal ends of neutral lines are connected to each other. The insulator has inner and outer walls spaced from each other in a radial direction. In a cross section at a gap between two adjacent coils, along a plane including an axis of the stator core, a center of gravity of the first region is positioned above a center of gravity of the second region in an axial direction. B&#x3c;A and C&#x3c;A, where a radial length of the first region is B, a radial length of the second region is C, and a radial length between the inner wall and the outer wall of the insulator is A.

Stator, motor, and compressor

A stator includes a core and an insulator. The core has a plurality of annularly arranged tooth portions. The insulator is disposed on an end portion of the core, and has an annular wall portion extending in a direction departing from the core. A protrusion protrudes radially outward across an entire circumference of the wall portion, and the protrusion is provided on an outer circumferential surface of the wall portion.

A sampling filter device wherein the filter characteristic is variable without using a control signal of a complicated waveform is provided. A sampling filter devicehas integration capacitorsand, an integration time adjustment section, and a plurality of switches, and. Input current is integrated in different time duration with one clock and is stored in the integration capacitorsandand charges stored in the integration capacitor from several clocks before to one clock before are added and the result is output. When charge is stored in the integration capacitorsandwith each clock, the integration time duration is changed, whereby it is made possible to weight and add output charge and the filter characteristic changes.

Sampling filter device

Disclosed are a nonlinear distortion compensating receiver and nonlinear distortion compensation method, wherein nonlinear distortion is reduced with a simple circuit configuration. A correction (opposite characteristics) filter () has characteristics opposite that of the frequency characteristics of a direct sampling mixer () and corrects signals sampled by the direct sampling mixer (). In the main path, a LPF () extracts a frequency band component of a desired signal from the corrected signal. In the replica path, a BPF () extracts the frequency band component of a blocker signal from the corrected signal. A cubing circuit () uses the frequency band component of the blocker signal to generate a replica signal for the nonlinear distortion. An adaptive filter () performs filter processing on the replica signal while updating the filter coefficients. A subtractor () subtracts the output signal of the adaptive filter () from the frequency band component of the extracted desired signal and outputs the subtraction result as the desired signal.

Nonlinear distortion compensating receiver and nonlinear distortion compensation method

An insulator for a motor includes an annular section, a plurality of tooth sections and a plurality of connecting sections. The tooth sections extend radially inward of an inner circumferential surface of the annular section and are circumferentially arranged about the annular section. The connecting sections connect an inner circumferential surface of an annular section to ends of the tooth sections. Each connecting section includes a circumferential planar portion extending circumferentially from the end of a corresponding one of the tooth sections, and a radial planar portion extending radially from the end of the corresponding one of the tooth sections. Preferably, a stator includes a pair of the insulators, a motor includes the stator, and a compressor includes the motor.

Insulator for motor, stator, motor and compressor

A stator for a motor of a compressor includes a stator core, an insulator fitted on an axial end face of the stator core, and coils wound around the stator core and the insulator. The insulator has an annular portion, a plurality of circumferentially arranged tooth portions projecting radially inwardly from an inner peripheral surface of the annular portion, and a cylindrical-shaped wall section erected on an axial end face of the annular portion. The coils include crossover wires routed on an outer peripheral surface of the wall section of the insulator so as to extend obliquely relative to a plane orthogonal to an axis of the stator, as viewed in a direction orthogonal to the axis.

A motor for a compressor includes a rotor and a stator disposed radial outside of the rotor. The stator includes a stator core having oppositely facing axial end faces, insulators disposed so as to face the end faces, and coils wound on the stator core and the insulators. Each of the insulators has an annular part, a plurality of teeth protruding radially inwardly from an inner circumferential surface of the annular part at specified circumferential intervals, an outer circumferential wall having one end fixed to an end face of the annular part, and protrusions disposed on an outer circumferential surface of an outer circumferential wall of an insulator. At least one lead wire of the coils is drawn out to an outer circumferential side of the outer circumferential wall, guided along the outer circumferential wall, and passed on a side of the protrusions facing the stator core.

Growing community of inventors

Kusatsu, Japan

Satoshi Tsukamoto